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Triangle Toolbox: Choosing the Right Trig Method for Every Problem
Triangle Toolbox: Choosing the Right Trig Method for Every Problem
How can we use the structure and known values of a triangle to choose and justify the right trigonometric method for solving problems in robotic arm design, and how do we know when to switch strategies for the most accurate solution?
Learning Intentions:
Identify which SOHCAHTOA ratio applies to a given problem based on which sides are known and which value they need to find.
Identify which SOHCAHTOA ratio applies to a given problem based on which sides are known and which value they need to find.
Today's Concept:
SOHCAHTOA has three ratios. Using the wrong one gives a wrong answer even when your algebra is perfect. The decision isn't random — it depends on two questions: what do I have, and what do I need? Have opposite and hypotenuse? Use sin. Have adjacent and hypotenuse? Use cos. Have opposite and adjacent? Use tan. Today you sort robot arm problem cards into three piles before you solve anything. The sort is the skill.
SOHCAHTOA
Right Triangle
Types of Triangles
Activity
Activity
Explore It - Choosing the Right Ratio
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